[Q] File System Issue

I have recently flashed my phone and something seems to have went wrong. Checking through the sd card with astro I noticed that I have somehow managed to duplicate the filesystem. It reads sdcard/0 - android and whatnot, sdcard/0/0 - exactly the same thing. I'm pretty sure I have an idea which is the 'older' version, but my question is whether it is safe to outright delete it or is there a better option?

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